Ok so the other day on my way back from Montgomery I feel this weird vibration when I press the throttle more than half way down. It feels like it is coming from the back, I have about 46K mileson the clock and just got new wheels and tires (which i had balanced and aligned) and was wanting some suggestions on what to look for. Thanks in advance.

Jeremiah

 

Maybe they didn't balance your wheels/tires as well as they thing they did. They need to do a dynamic balance not only across the face of the wheel but also from the inside to the outside of the rim. Not all balancers can do this and some aftermarket wheels are very poorly weight distributed from the factory.

Also have your CV joints checked.

 

they are new to me Stock wheels that had 20 miles on them, what would I have to do to check the cv joints?

 

Although the stock wheels are generally a safe bet, they can still be out of balance.
For the CV, you need to know what you're seeing and feeling. You need to jack up the rear of the car, get under there and manipulate the axles for each CV. You need to have the ebrake applied, tranny in gear and rotate the axles back and forth and see, feel and listen for how much play and slack there is. Also, you need to move the axle up and down, front and back and note similar things. If you don't know what to look for, you should get a mechanic to do it. Telling you over the internet won't help you if you don't already know.

 

I have an appointment at Honda on Friday. Thanks

 

Tire vibrations usually occur above 30mph, and are not changed by throttle position.

If the inner CV joints are worn/scored/groved, the vibration usually goes away under decel, then re-appears under accel.

I've seen lots of tire stores fail to clean the inside of the wheel where the stick on weights attach. The weights then get chucked after driving a while, and a vibration results.

 

Bad inner CV joints are most noticeable on acceleration, or when the axles are loaded.

 

So I guess my next question would be are honda alignments warrantied at all? I just had it done liek a month ago. (I would assume no but you never know)

 

Unless the caster is way way out, your not going to have a vibration due to an alignment problem.

The warranty on the alignment is through the original shop only. I'd guess it's going to be a no. You can crank a pothole and throw the toe out, not something they can warranty.

Even so, You can align a car, roll it back 2 inches on the alignment rack, roll it back to the original position and have slightly different measurements than before. If they did realign the car, I wouldn't be surprised with slightly different #'s.

 

Tire pressures, tire tread depth (and thus overall diameter), and fuel level make a big, big difference when it comes to an alignment. It's very important to have equal tire pressures and tire heights (from left to right) before an alignment is done. I would also have about a 1/2 tank of fuel. The difference between a full tank and empty tank (roughly 100lb) is enough to throw off the alignment machine readings.